#include <msp430x14x.h>
#include <math.h>
#define uchar unsigned char
#define ushort unsigned short
#define uint unsigned int
//*********************************************************
#define CPU_F ((double)8000000)
#define delay_us(x) __delay_cycles((long)(CPU_F*(double)x/1000000.0))
#define delay_ms(x) __delay_cycles((long)(CPU_F*(double)x/1000.0))
#define uchar unsigned char
#define uint
unsigned int
#define ulong unsigned long
#define P55 5
#define P56 6
#define P57 7
#define RS_CLR
P5OUT &= ~(1 << P55)
//RS
置低
#define RS_SET
P5OUT |= (1 << P55)
//RS
置高
#define RW_CLR
P5OUT &= ~(1 << P56)